Congressional Research Service. May 14, 2012.

Interest in congressional oversight of intelligence has risen again in recent Congresses, in part because of disputes over reporting to Congress by intelligence community (IC) components on sensitive matters, including developments generated by the wars in Iraq and Afghanistan. The changes in the oversight structure adopted or proposed in recent Congresses, however, also reflect earlier concerns, such as increasing independent auditing authority for the Government Accountability Office (GAO) over the intelligence community, adding offices of inspectors general (OIGs), clarifying reporting requirements to Congress, and restructuring Congress’s oversight mechanisms.

http://fpc.state.gov/documents/organization/190155.pdf [41 pages].